# LLM Proxy Security Audit Report

## Executive Summary
A comprehensive security audit of the `llm-proxy` repository was conducted. The audit identified **1 critical vulnerability**, **3 high-risk issues**, **4 medium-risk issues**, and **3 low-risk issues**. The most severe findings include Cross-Site Scripting (XSS) in the dashboard interface and insecure storage of provider API keys in the database.

## Detailed Findings

### Critical Risk Vulnerabilities
#### **CRITICAL-01: Cross-Site Scripting (XSS) in Dashboard Interface**
- **Location**: `static/js/pages/clients.js` (multiple locations).
- **Description**: User-controlled data (e.g., `client.id`) inserted directly into HTML or `onclick` handlers without escaping.
- **Impact**: Arbitrary JavaScript execution in admin context, potentially stealing session tokens.

#### **CRITICAL-02: Insecure API Key Storage in Database**
- **Location**: `src/database/mod.rs`, `src/providers/mod.rs`, `src/dashboard/providers.rs`.
- **Description**: Provider API keys are stored in **plaintext** in the SQLite database.
- **Impact**: Compromised database file exposes all provider API keys.

### High Risk Vulnerabilities
#### **HIGH-01: Missing Input Validation and Size Limits**
- **Location**: `src/server/mod.rs`, `src/models/mod.rs`.
- **Impact**: Denial of Service via large payloads.

#### **HIGH-02: Sensitive Data Logging Without Encryption**
- **Location**: `src/database/mod.rs`, `src/logging/mod.rs`.
- **Description**: Full request and response bodies stored in `llm_requests` table without encryption or redaction.

#### **HIGH-03: Weak Default Credentials and Password Policy**
- **Description**: Default admin password is 'admin' with only 4-character minimum password length.

### Medium Risk Vulnerabilities
#### **MEDIUM-01: Missing CSRF Protection**
- No CSRF tokens or SameSite cookie attributes for state-changing dashboard endpoints.

#### **MEDIUM-02: Insecure Session Management**
- Session tokens stored in localStorage without HttpOnly flag.
- Tokens use simple `session-{uuid}` format.

#### **MEDIUM-03: Error Information Leakage**
- Internal error details exposed to clients in some cases.

#### **MEDIUM-04: Outdated Dependencies**
- Outdated versions of `chrono`, `tokio`, and `reqwest`.

### Low Risk Vulnerabilities
- Missing security headers (CSP, HSTS, X-Frame-Options).
- Insufficient rate limiting on dashboard authentication.
- No database encryption at rest.

## Recommendations
### Immediate Actions
1. **Fix XSS Vulnerabilities:** Implement proper HTML escaping for all user-controlled data.
2. **Secure API Key Storage:** Encrypt API keys in database using a library like `ring`.
3. **Implement Input Validation:** Add maximum payload size limits (e.g., 10MB).
4. **Improve Data Protection:** Add option to disable request/response body logging.

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*Report generated by Security Auditor Agent on March 6, 2026*
